The number 25090
25090 is a composite number with 16 divisors. Its prime factorisation is 2 × 5 × 13 × 193. Divisors (16): 1, 2, 5, 10, 13, 26, 65, 130, 193, 386, 965, 1930, 2509, 5018, 12545, 25090.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
25090 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
25090 is composite. Its prime factorisation is
- 3
The divisors add up to 48888; without 25090 itself that is 23798, so 25090 is deficient (23798 is less than 25090). Euler's totient φ(25090) = 9216 numbers up to 25090 share no factor with it.
- 4
The digits of 25090 add up to 16, and repeating that until one digit is left gives the digital root 7. The Collatz sequence (halve if even, else 3n+1) takes 64 steps to reach 1.
LaTeX source of the formulas on this page
\[ 25090 = 2 \times 5 \times 13 \times 193 \]
25090 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 48888 |
| Euler totient φ(n) | 9216 |
| Square | 629508100 |
| Cube | 15794358229000 |
| Square root | 158.398232 |
| Digit sum / digital root | 16 / 7 |
| Collatz steps to 1 | 64 |
| Scientific notation | 2.509 × |
25090 in other forms
| Form | Value |
|---|---|
| In words | twenty-five thousand and ninety |
| Binary (base 2) | 110001000000010 |
| Octal (base 8) | 61002 |
| Hexadecimal (base 16) | 6202 |
| Base 3 | 1021102021 |
| As time | 25090 seconds = 6 h 58 min 10 s |
Is 25090 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (25090 ÷ 2 = 12545) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | No (remainder 1) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 2) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | Yes (25090 ÷ 5 = 5018) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 4) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 2) | A number is divisible by 7 if double the last digit and subtract it from the rest: the result is a multiple of 7. |
| 8 | No (remainder 2) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 7) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | Yes (25090 ÷ 10 = 2509) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 10) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 10) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 25090 a prime number?
No. 25090 = 2 × 5 × 13 × 193, so it is divisible by 2.
What are the factors of 25090?
1, 2, 5, 10, 13, 26, 65, 130, 193, 386, 965, 1930, 2509, 5018, 12545, 25090.
What is 25090 in binary?
110001000000010 (hexadecimal 6202, octal 61002).
What is the square root of 25090?
About 158.3982.
Is 25090 divisible by 3?
No. Its digits add up to 16, which is not a multiple of 3.
What is special about the number 25090?
It is a composite number with 16 divisors.